One of they ways you get shards is by mini pass or mini pass for free, there are a boxs or chest that have a crown logo on it, that means that it contains a hero, a brown box has x2-4 hero cards,a blue box has x5-7 hero cards, and a big big purple box has x8-16 hero cards. you can also buy them from the shop for 100 gems and they bring 25 each.or from a bundle that cost real money NOTE: is a box DOSE NOT have a crown it dose not have a hero its has normal troops/minis